The moment I turned into a fan of the excellent Pinky and the Brain cartoons was when I saw the episode below.
It was probably the least funny and most uncharacteristic episode of the series.
But it was also a genius word-for-word parody of a famous outtake of Orson Welles in a studio recording a commercial, and giving the engineer grief.
Here’s the Pinky and the Brain version:
And here’s the Orson Welles original outtake: